?? ??“?”??? “?VA”?????“??”
![](https://image.chezhanri.com/2019/0618/20190618111001628.jpg)
????:1??????????:???????
2???????
3??????v
4???????
5????????
?????7????????????????14? ?????:??????????????????????????“???”???????????? “??????????????VA”???“????????????”
???? ?
“?,???????”?????????????????????????,????????????????????????????????????????????????????,???
7?13???,?,??“?????VA”???????????(???????????????????????????)???,???????????????,?????????????????????“???????????”?
![](http://i2.chinanews.com.cn/simg/ypt/2024/240714/02f08bf4-34cd-475a-8d33-a6d4d24b39b8_zsite.jpg)
“?????????,??????,????”?,?,??
????????????20??,??????,????????,??,?????????????????????????????????
“????????????????????,????????????????????,?????”??,?????,?????????????????????????,????????????????,?????????????????????????????????
![](http://i2.chinanews.com.cn/simg/ypt/2024/240714/630c9717-66df-460e-8783-7f5a2beb58fb_zsite.jpg)
??????,?13?????,???????????????,???????????,?,???
???“???????????????VA”????????,?????????????????????????????????????????,????,???,???
![](http://i2.chinanews.com.cn/simg/ypt/2024/240714/def75805-eb7f-494e-812b-74f012d96aad_zsite.jpg)
???????????,“???????????VA”?????,????????,?????????,??????????
“?,??”??,???????????,????????,???(?)
???:????????????